BOD (biochemical oxygen demand)
The amount of oxygen required by aerobic microorganisms to decompose the organic matter in a sample of water, such as...
Cryptosporidium is a protozoan organism which causes the parasitic infection,
cryptosporidiosis. It exists in either the free-swimming (trophozoite) f...
The dissolved oxygen (DO) is oxygen that is dissolved in water. The oxygen dissolves by diffusion from the surrounding air; aeration of water that has...
The greatest risk from microbes in water is associated with consumption of drinking-water that is contaminated with human and animal excreta, although...
What are coliform bacteria?
Coliform bacteria originate as organisms in soil or vegetation and in the intestinal tract of warm-blooded animals (fecal ...
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